How to fix Extent Allocation problem in Mac OS X using Disk Utility or sackcan try solving the problem using Disk Utility in Mac OS X 10.4.2 or later. It can help you to overcome such problems without erasing entire volume. If your system or boot volume is not working properly, boot your system from Mac OS X 10.4.2 or later boot disk, and then run Disk Utility tool for repairing affected Mac volume.
You can repair only Mac OS X Extended Journeyedor Mac OS X Extended volumes (also called HFS Plus, HFS Plus volumes, or HFS Plus Journeyedyou are using the Disk Utility tool on Mac OS X 10.4.2 or later boot DVD or sackfor repairing affected volume, you can review some of the affected files with the help of Damaged Filesdirectory.
Check for Files:
When you use sackor Disk Utility in Mac OS X 10.4.2 or later versions to fix the overlapped extent allocation problems, the below processes take place:
Repair utility tries to move data of overlapped file to new location.
If move completes successfully, file is updated for using new location.
If move fails, the data is not moved.
In case you don't have Mac OS X install disk or volume that you can use to boot your system, you should not install updates. It may cause further damage and cause severe data loss, putting you in need of Macdisk recovery
Recovery is best possible using advanced and powerful Mac recovery software. The applications do not modify original data on the hard drive as of their read-only and non-destructive conduct. The Mac recovery applications are incorporated with rich graphical user interface to offer easy recovery.
Stellar Phoenix Macintosh Data Recovery software salvages lost, deleted, missing, inaccessible, and unusable files from Mac hard drive. It works well with Mac OS X 10.6 Snow Leopard, 10.5 Leopard, 10.4 Tiger, and 10.3.9 Panther. The software retrieves data from HFS, HFS+, HFSX, HFS Wrapper, and FAT file system volumes.
